Mechanism for winding yarn.



No. s4a,|43. Patentad Apr. 24, 1900. 6. BROWN & 'E. DICK.

MECHANISM FOR WINDING YARN.

(Application filed Mar. 28, 1899.)

2 Sheets-Sheet I.

(No Model.)

IzzbewQra No. s4a,|4a. Patented A r; 24, I900. 6. BROWN & E. DICK.

MECHANISM FOR WINDING YARN. (Application filed mar. 23, 1899.! (No ModeI.) 2 Sheets-Sheet 2.

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. NITED STATES PATENT OFFICE.

GEORGE BROWN AND EMIL DICK, OF AUBURN, MAINE.

MECHANISM FOR WlNDl NG YARN.

SPECIFICATION forming part of Letters Patent No. 648,143, dated April 24, 1900.

Application filed March 2 3, 1 89 9.

To all whom it may concern: 7

Be it known that we, GEORGE BROWN and EMIL DICK, of Auburn county of Androsco,,- gin, State of Maine, have invented an Improvement in Mechanism for Winding Yarn, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts. Our invention is an improved mechanism for controlling the tension of yarn during the process of winding or beaming of the general kind explained in United States Patent No. 613,004, issued to us October 25, 1898.

The present invention relates particularly to the tension-governing mechanism for slashers and beaming-machines, our object being to provide a simple and durable construction which shall be sensitive and automatic in operation; and'to'that end we have provided, in connection with a suitable clutch mechanismfor positively rotating the'beam on which the yarn is'being wound, a regulator-which automatically'determines the time and extent of movement of the clutch or coupling mechanism. I The various details of construction and mode of operation and advantages of our invention will be more fully set forth in the following description, reference being had to the accompanying drawings, illustrative of a preferred embodiment of the invention, and the latter will be more particularly defined in the appended claims.

In the drawings, Figure 1 shows in side elevation, parts being broken away, sufficient details of our improvement to enable the same to be understood. Fig. 2 is a top plan view thereof, likewise broken away. Figs. 3 and 4 are fragmentary views in side elevation, illustrating different relative positions of the parts of the mechanism. Fig. 5 is a central vertical sectional detail of the dog-regulator or movable shield. Fig. 6 is a top plan View of said shield. Figs. 7 and 8 show, respectively, the actuating-dogs in side elevation and top plan.

Suitably journaled in the frame A of the machine are fixed rolls a a and a movable roll a the latter being carried concentric to roll a by any convenient yielding mechanism or tension device, herein shown as comprising Serial No. 710,137. (No model.)

a, hearing at their upper ends against guide brackets a and at their lower ends against adj ustable collars a.

Our object in pivoting the-roll a concentrically of the roll a, as above described, in-

stead of pivoting it to the frame of the machine, as in our before-mentioned patent, is for the purpose of having the roll 3 moved concentrically of roll 1, so as to retain the full contact of the yarn on the latter roll, this arrangement giving much better results than when the roll Sis raised away from roll 1 as the yarn becomes slack. According to our pres ent arrangement the slacker the yarn becomes the more frictional contact it has on roll 1.

The beam B of any suitable kind isshown as mounted at one endvin a bracket and-at its other end in a shaft 0e which communicates motion thereto, said shaft being journaled in brackets a, secured to the main frame, and being driven by a friction-clutch mechanism comprising opposite friction-disks 01. a, carried by a drivingear a fldriven bya gear a", fast on the powershaft co which carries the roll a. The disks a a and their gear a are loose on the shaft ct and thedisks bear frictionally against-opposite face plates or disks a 03", which are splined to the shaft a, the former of. said disks bein g yieldinglysupp0rted by a'sensitive spring a. Against the disk a bears an externally-threaded sleeve a mounted on the shaft or and free to move longitudinally thereon, but held against rotating therewith bya pin or bolt 0, and on this sleeve is mounted an internally-threaded ratchet-wheel a, bearing against the adj acent bracket a and provided peripherally with ratchet-teeth to be engaged by one or delicacy of movement may be imparted to the automatic mechanism.

Preferably two pawls, as in our patent, are employed, said pawls being shown in detail in Figs. 7 and S, where it will be seen that one pawl c is provided with a horizontally-extended tailpiece c, and the other pawl c has a downwardly-projecting tailpiece e one tailpiece having an eye and the other a hook 0 whereby they may be conveniently connected by a spring 0 tending to move the pawls upwardly to en gage with the ratchet-teeth of the wheel a. The pawls are loosely mounted on a cross head or pin 0 sliding in slots co in the lower end of the bracket a, said slots being held in planes at opposite sides of the hand-wheel or ratchet-wheel [L by a bridge a. and the pin 0 being moved back and forth by any suitable means, herein shown as alink c pivoted at c to a bell-crank lever 0 connected by a link 0 to any convenient place for receiving regular movement, shown as to an eccentric pin 0 on the power-shaft a.

The parts thus far described if left tothemselves would simply cause the wheel a tube rotated back and forth, as the respective pawls might escape at one side or the other i of the bridge a to engage with the ratchetteeth of the wheel, and accordingly in order to restrict the operative movement of these pawls precisely as required, according to the conditions of the winding, and cause them to act upon the clutch mechanism only when the yarn is being wound either too tight or too slack, and then to act only to the extent required, We provide automatic mechanism which, although capable of many embodiments and a wide variety of arrangements and forms, is for convenienceof explanation and illustration herein shown as follows: Mounted to slide relatively to the bridge a is a regulator or shield (1, shown as resting on the bridge engaged by a lipor flange (r at its rear edge and by a projection a extending up through a slit cl, adjacent the front edge of the shield, said shield having a wrist-pin d at its front edge, on which is pivoted an operating-link d pivoted at d to a bell-crank d connected by a pitman or link cl to the swinging lever (i to move with the movable roll a as the latter is depressed by the tightening of the yarn or permitted to rise by the slackening thereof.

The operation of our improvement will be understood by viewing Figs. 1, 3, and 4,Which show, respectively, the relative positions of the parts under a normal tension of the yarn, an undue tautness and an undue slackness thereon. properly, the shield or regulator cl occupies an intermediate position, as shown in Fig. 1, so that the reciprocating movement of the pawls fails to carry them into engagement with the ratchet-teeth, the pawls simply sliding alternately against the projecting ends of the shield. If, however, the strain or tension on the yarn is too great, the movable roll When the yarn is being wound:

a will thereby be depressed into the position shownin Fig. 3 and will automatically operate through the pitman d bell-crank (Z and link (1 to slide the shield-or regulator to the right into the position shown in Fig. 3, thereby entirely removing the obstruction from the ratchet-teeth at the left, so as to permit the pawl c to engage the ratchet-teeth and turn the wheel at to the greatest extent with each reciprocation of the link 0 This operation turns the wheel a so as to move the sleeve a outwardly and release the frictional engagement of tho clutching mechanism sufficiently to permit the shaft e to slip slightly relatively to its driving-gear a and hence permit the beam 13 to rotate slightly slower than before. On the other hand, if the strain on the yarn is not sufficient to hold the weight a and spring a in their intermediate positions they will raise the swinging roll a to the position shown in Fig. 4, and will thereby through the connecting parts shift the shield 'or regulatord into the position shown in Fig. i, thereby exposing I the ratchet teeth at the right, so as to permit the pawl c to turn the wheel d over to the left, and thereby move the sleeve (L22 inward brin in reater res-i 9 D b D between the extremes shown in Figs. 3 and 4,

according tov the strain on the yarn, and will thereby expose the ratchet-teeth only to a corresponding degree, so that the pawlswill be permitted to engage said teeth only during'a correspondingly greater or less part of their reciprocating movement. If it is desired to throw the pawls out of action,all that is necessary is to unhook the spring c ,wherenponthe pawls drop into idle position.

As before stated, we do not intend to restrict ourselves to the details of construction shown. 7 7

Having described our invention, what we claim, and desire to secure by Letters Patent,

1. In a machine of the class described, a beam for receiving the yarn, means including friction mechanism for forwardly rotating the beam to wind on the yarn, automatic mechanism for in-creasingor diminishing the friction-pressure of the beam-turning mechanism, said automatic mechanism including a ratchet and continuously-operated pawl, and a regulator actuated by the tension of the yarn for rendering said pawl operative or inoperative, substantially as described.

2. In a machine of the class described, a beam for receiving the yarn, means including friction mechanism for forwardly rotating the beam to wind on the yarn, a pawl and ratchet for governing the frictiompressure of said friction mechanism, connections for operat ing said pawl, and automatic means inde* pendent of said connections actuated by the ICC tension of the yarn for regulating the effective engagement of said pawl with said ratchet, substantially as described.-

3. In a machine of the class described, a beam for receiving the yarn, means including friction mechanism for forwardly rotating the beam to Wind on the yarn, a pawl and ratchet for governing the friction-pressure of said friction mechanism, means for reciprocating said pawl a uniform distance, and means between the pawl and ratchet actuated by the tension of the yarn for limiting the efiective engagement of the pawl with the ratchet, substantially as described.

4C. In a machine of the class described, a

beam for receiving the yarn to be wound,

means including a movable tension device over which the yarn passes to said beam, said tension device being automatically moved by the strain of the yarn, driving means for the beam including friction mechanism, actuating means for positively varying the frictionpressure of said friction mechanism, and a regulating-slide connected with a moving part of said tension device, said slide regulating the effective movement of said actuating means, substantially as described.

5. In a machine of the class described, a beam for receiving the yarn to be wound, means including a movable tension device over which the yarn passes to said beam, said tension device being automatically moved by the strain of the yarn, drivingmeans for the beam including friction mechanism, actuating means including apawl and ratchet for positively varying the friction-pressure of said friction mechanism, and a regulating slide connected with a moving part of said tension, device, said slide operating betweensaid pawl and ratchet for regulating the effective movement of said actuating means, substantially as described.

- G. In a machine of the class described, a'

yarn receiving beam, frictional driving means therefor, a ratchet for varying the degree of friction of said frictional driving means, and two pawls and a spring on the underside of said ratchet, each of said pawls having a tailpiece, said tailpieces crossing each other in divergent directions, and said spring being secured to one tailpiece and detachably hooked over the end of the other tailpiece, the unhooking of said spring instantly disengaging said pawls by gravityfrom said ratchet, substantially as described.

7. In a machine of the class described, a beam forreceiving the yarn to be wound, driving means for the beam, a fixed roll, a movable roll, and tension devices operating on said movable roll, the yarn being led around said fixed roll and movable roll on opposite sides thereof, said movable roll being pivotally mounted adjacent said fixed roll, to move concentrically thereof, whereby the slacker the yarn'becomes, the greater is the extent of its frictional contact with the fixed roll, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

' GEORGE BROWN.

.EMIL DICK.

-Witnesses:

S. MEBRITT FARNUM, J r., C RNELIA PULSIFER. 

